The DS25BR110TSD, manufactured by National Semiconductor (now Texas Instruments), is a 2.5 Gbps 1:1 Buffer/Repeater with Transmit De-Emphasis and input equalization. This device is designed to extend the signaling distance and improve signal integrity in high-speed data transmission systems. It compensates for Inter-Symbol Interference (ISI) introduced by cables and backplanes, ensuring reliable data transfer. The inclusion of input equalization further enhances its ability to recover degraded signals. Note that this part is designated as END-OF-LIFE.

Applications:

• Backplanes: Used in backplane applications to improve signal integrity and extend transmission distances.
• Cable Extension: Employed to extend the reach of cables in high-speed data links.
• High-Speed Data Transmission: Suitable for applications requiring reliable data transfer at speeds up to 2.5 Gbps.
• Storage Systems: Incorporated in storage systems to enhance signal quality in data paths.
• Networking Equipment: Used in networking equipment to improve signal integrity over longer distances.

Features:

• 2.5 Gbps Operation: Supports data rates up to 2.5 Gbps.
• Transmit De-Emphasis: Compensates for ISI by pre-emphasizing the transmitted signal.
• Input Equalization: Recovers signals degraded by ISI before retransmission.
• Low Power Consumption: Minimizes power consumption, making it suitable for power-sensitive applications.
• Adjustable De-Emphasis Levels: Allows for fine-tuning of the de-emphasis to optimize signal integrity.

Benefits:

• Improved Signal Integrity: Enhances signal quality by compensating for ISI with both de-emphasis and equalization.
• Extended Transmission Distance: Increases the distance over which reliable data transmission can occur.
• Reduced Bit Error Rate (BER): Lowers the BER by improving signal quality.
• Simplified System Design: Simplifies the design of high-speed data links.
• Enhanced System Reliability: Improves the overall reliability of the data transmission system.

Additional Details:

The DS25BR110TSD operates from a 3.3V supply. The inclusion of input equalization allows it to recover signals that have already been degraded by ISI before applying transmit de-emphasis. This combination makes it particularly effective in challenging high-speed environments. The device is available in a space-saving package. The de-emphasis levels are adjustable to compensate for losses at different frequencies. As this part is designated as END-OF-LIFE, consider alternative solutions for new designs.